What is CVE-2021-21427?

CVE-2021-21427 is a critical-severity vulnerability in Openmage Magento, classified under SQL Injection. CVSS score: 9.1/10. Published 2021-04-21.

How severe is CVE-2021-21427?

Critical severity. CVSS v3 base score is 9.1 out of 10.

SQL Injection in Openmage Magento

CVE-2021-21427

Magento-lts is a long-term support alternative to Magento Community Edition (CE). A vulnerability in magento-lts versions before 19.4.13 and 20.0.9 potentially allows an administrator unauthorized access to restricted resources. This is a backport of CVE-2021-21024. The vulnerability is patched in versions 19.4.13 and 20.0.9.

Vulnerability class: SQL Injection

Published 2021-04-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (64.4th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Openmage Magento
Openmage Magento-Lts — versions <= 19.4.12, <= 20.0.8

Weakness classification (CWE)

CWE-89 — SQL Injection

References

github.com/OpenMage/magento-lts/security/advisories/GHSA-fvrf-9428-527m (Third Party Advisory)

Frequently asked questions

What is CVE-2021-21427?: CVE-2021-21427 is a critical-severity vulnerability in Openmage Magento, classified under SQL Injection. CVSS score: 9.1/10. Published 2021-04-21.
How severe is CVE-2021-21427?: Critical severity. CVSS v3 base score is 9.1 out of 10.